Mistaking the Billionaire's Sister for a Mistress
Mistaking the Billionaire's Sister for a Mistress is a 30-episode counterattack short drama streaming in English on Dramaflix — every short series from 45+ platforms for just $12 a month.
Where to watch?
Dramaflix is the better dealPay about $7.99 less a month with Dramaflix and get short series from 45+ platforms, ShortWave included, in one plan.Save about $7.99 a month
Plot
Emma, the eldest daughter of a chaebol who hides her identity, is mistaken — because she flies economy — by the family of her future sister-in-law Sarah for a "pregnant mistress scheming for the inheritance," and is subjected to deadly persecution. From a forced plane landing to having her baby snatched at the hospital and her family heirloom crushed underfoot, Emma fights to the death to protect her child in dire straits. In the end, her billionaire chaebol brother Arthur descends like a divine army and sees through the vicious true faces of his fiancée's family. Once the truth comes out, the villains are fully blacklisted and thrown into prison, and Emma reclaims the dignity and happy life that belong to her.
Frequently Asked Questions
Where can I watch Mistaking the Billionaire's Sister for a Mistress?
Mistaking the Billionaire's Sister for a Mistress streams in English on Dramaflix; it originally comes from ShortWave. A Dramaflix subscription covers every short series from 45+ platforms.
How much does it cost to watch Mistaking the Billionaire's Sister for a Mistress?
On Dramaflix, Mistaking the Billionaire's Sister for a Mistress is included in a single $12/month plan that covers every short series from 45+ platforms. Watching it on ShortWave alone costs around $19.99 a month, so Dramaflix saves you about $7.99 a month.
Is Mistaking the Billionaire's Sister for a Mistress on Dramaflix?
Yes, Mistaking the Billionaire's Sister for a Mistress is in the Dramaflix catalog, with all episodes available in English.
How many episodes does Mistaking the Billionaire's Sister for a Mistress have?
Mistaking the Billionaire's Sister for a Mistress is a short vertical miniseries with 30 episodes in total.
What genre is Mistaking the Billionaire's Sister for a Mistress?
Mistaking the Billionaire's Sister for a Mistress is a counterattack short drama with themes such as urban, secret identity, anime, and heir.
Is Mistaking the Billionaire's Sister for a Mistress dubbed or subtitled in English?
Mistaking the Billionaire's Sister for a Mistress is available on Dramaflix with English dubbing, English subtitles, or both.
What is Mistaking the Billionaire's Sister for a Mistress about?
Emma, the eldest daughter of a chaebol who hides her identity, is mistaken — because she flies economy — by the family of her future sister-in-law Sarah for a "pregnant mistress scheming for the inheritance," and is subjected to deadly persecution.
Streaming info last updated: November 11, 2026
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